Alarm.



I. H. TROLAND.

ALARM. APPLICATION FILED MAR. 21. 1905,

PATENTED AUG; 1907.

fibzeois'edx- I EZZ/ ePZZZIF onrrnn sears THOMAS H. TROLAND, OF NEWLONDON, CONNECTICUT.

Specification of Letters Patent.

ALARIM.

Fatente. Aug. 27,.2967.

Applicotionfileal March 8,1965. Serialll'o. 249,076.

To all whom it may concsrnf Be it known that I, Tr er/ms H. TRGLAND, acitizen of the United States, and a resident of New London, in thecounty of N'ew 'llondon and State of Connecticut,

Alarms, of which the following is a specification.

The object of this present invention is t o provide mechanism which willgive notice at a predetermined "point or points of the escape of waterthrough any one of a plurality of nozzles or any one series of anlurality of series of nozzles attached to an automatic sprinklersystem.

A further object is to provide mechanism of this character in which anyone of the nozzle attachments can be manually tested at any time Withoutdisarminging any part of the-automatic sprinkler system, such testingbeing accomplished by stringing the nozzle attachment down into positionto complete the elecso nkler,=in locking trical circuit.

In the accompanying drawings, Figure 1 represents a portion of anautomatic sprinkler system with two of the nozzles shown in connectiontherewith in top plan, Fig. 2 is a transverse section through the samewith my improved alarm system applied thereto, one of the 11ozzles beingshown in section and the other in side elevation, and one of the nozzleattachments being shown in its released position for completing acircuit to sound an alarm at predetermined point and to indicate whichparticular attachment is released, and Fig. 3 is an end view of one ofthe nozzles with my alarm atoclied position thereon.

' in in conol invention, mg 3 1 have shown two which sy he of anysorinstanc as known or a roveclfor-n' provided Wi h riphez'y for nozzleswh The in \IA 14' in a log 15 projectnt from theiace oi the base plate 9of the clamp. A erminal 16 is carried by the clamp but is electricallyinsulated therefrom. When the lever 12, 13, is its operative position,the arm 12 projects on into position to he engaged by the Water as itthrongh the nos shen'the ping 5 is zeleesei.

have invented a new and useful Improvement provided with a bell alarm19.

among ed to This arm 12 is siifilciently weighted so that when swungpast center it will normally hold the arm 13 raised out of engagementwith the! terminal 16. When the arm 12 is engaged by escaping water, itwill he swung into position to permit the arm 13 to drop into engagementwith the terminal 16. The an. 13 may be provided with an indicator disk17 which is so arranged that :the position of the same indicates whetherthe circuit is open or closed.

It is desirable that each one of the sprinkler nozzle attachments oreach series of a plurality of series should be numbered. In the presentinstance I have numberezl one of the attachments l and the other oi theattachmcnts 2.

A portion of an annunciator is denoted by 18 and it is It is alsoprovided with openings through which numbers may be displayed. Thisannunciator may be oi-any to known or approved construction. A source ofelectrical energy such, for instance, as ahattery 20, is provided in theWire 21 which leads from one of the binding posts 22 of the battery toground, as, for instance. to the piping 3. The terminals 16 of theseveral nozzle attachments are connected through Wires 23 to thehintling posts 24 of the annuncizttor 18. The electric circuit is soarranged that when any one of or series of those nozzle attachmentsbecomes released, the hell erarm'will ring, and the number correspondingto the attachment or the series of which it. is a part, will bedisplayed in the annunciator, This will permit a person to go directlyto the particular nozzle attachment or res of nozzle attach which may hereleased.

v'itecl as the pe ing the electric circuit and to he direction byescaping water to on indicator disk carried by the said inicate whetherI controlled device cuit is open or closed.

2. in e automatic sprinkler system, a plurality of by gravity clown Iiii:

sprinkler nozzles, an alarm included in an electric circuit, gravitycontrolled devices'tor the several nozzles arranged to be swung pastcenter in one direction for retaining the devices in position to breakthe electric circuit and to be swung past center in the oppositedirection by escaping water to close the circuit.

3. In an automatic sprinkler system, a plurality of sprinkler nozzles,an alarm comprising an annunciator included in an electric circuit,gravity controlled devices arranged to be swung past center in onedirection for retaining the devices in position to break the circuit andseems

